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MERLIN LEGEND Communications System Release 5.0
System Manager’s Guide
555-650-118
Issue 1
June 1997
Features and Applications
Page 4-42Features
4
■ Some voice messaging systems (described later in this chapter) permit
outcalling
. That is, these systems can be programmed to call an outside
number to deliver messages or faxes. This feature can be used for toll
abuse, so consider calling restrictions for lines used by such systems.
■ Remote Call Forwarding can be allowed or disallowed for your system. If
allowed, a user can have calls forwarded to an outside number. (This is not
permitted at extensions or on lines where calling restrictions have been
applied.)
■ When restrictions are applied to extensions, rather than to lines/trunks, a
person can ask a co-worker or operator with fewer restrictions to make a
toll call on his or her behalf.
■ Authorization codes are intended to allow people with less restricted
extensions to use extensions where there are more restrictions. If you use
authorization codes to enforce restrictions, people may discover that, at
some extensions, they can make calls without using authorization codes
and gain more privileges than their own extensions allow.
The sections below list the types of restrictions, including the following
information:
■ Whether the restriction is applied to an extension, line, remote access
barrier code (acting as an “extension” for a remote access user), or a
combination
■ What other restriction features it works in conjunction with, as well as mode
restrictions
■ A brief description, including recommended use
Since there is some interaction among these features and with other system
features, refer to the
Feature Reference
for more detailed information
.
Outward and Toll Restrictions 4
Apply to: Lines/trunks, especially those used for remote access or for outcalling
by a voice messaging system (see ‘‘
Voice Messaging Systems’’ on
page 4-60), excluding tie and emulated tie trunks programmed as
Tie-PBX for Hybrid/PBX mode extensions.
Use with: Allowed Lists to permit restricted users to make some calls. (Tagged
System Speed Dial codes or their corresponding tagged Directory
listings can also be used to make certain calls.) Can be used with any
other calling restrictions.
An extension, line/trunk, or remote access user’s barrier code can be
programmed to prevent either all outside calls or outside toll calls only. In Release
3.1 and later systems, ports assigned for use by voice messaging systems
(generic or integrated VMI ports) are assigned outward restrictions by default. If a
voice messaging system is allowed to call out (for example, to send calls to a
user’s home office), the system manager should remove these restrictions.